Buggy code:
public final class Primitive implements ParserConstants , Serializable { static Hashtable primitiveToWrapper = new Hashtable ( ) ; static Hashtable wrapperToPrimitive = new Hashtable ( ) ; private Object value ; private static class Special implements Serializable { private Special ( ) { } public static final Primitive . Special NULL_VALUE = new Primitive . Special ( ) ; public static final Primitive . Special VOID_TYPE = new Primitive . Special ( ) ; } public static final Primitive NULL = new Primitive ( Primitive . Special . NULL_VALUE ) ; public static final Primitive VOID = new Primitive ( Primitive . Special . VOID_TYPE ) ; public Primitive ( Object value ) { } public Primitive ( boolean value ) { } public Primitive ( byte value ) { } public Primitive ( short value ) { } public Primitive ( char value ) { } public Primitive ( int value ) { } public Primitive ( long value ) { } public Primitive ( float value ) { } public Primitive ( double value ) { } public Object getValue ( ) { } public String toString ( ) { } public Class getType ( ) { } public static Object binaryOperation ( Object obj1 , Object obj2 , int kind ) throws UtilEvalError { } static Object binaryOperationImpl ( Object lhs , Object rhs , int kind ) throws UtilEvalError { } static Boolean booleanBinaryOperation ( Boolean B1 , Boolean B2 , int kind ) throws UtilEvalError { } static Object longBinaryOperation ( Long L1 , Long L2 , int kind ) { } static Object intBinaryOperation ( Integer I1 , Integer I2 , int kind ) { } static Object doubleBinaryOperation ( Double D1 , Double D2 , int kind ) throws UtilEvalError { } static Object floatBinaryOperation ( Float F1 , Float F2 , int kind ) throws UtilEvalError { } static Object promoteToInteger ( Object wrapper ) { } static Object [ ] promotePrimitives ( Object lhs , Object rhs ) { } public static Primitive unaryOperation ( Primitive val , int kind ) throws UtilEvalError { } static boolean booleanUnaryOperation ( Boolean B , int kind ) throws UtilEvalError { } static int intUnaryOperation ( Integer I , int kind ) { } static long longUnaryOperation ( Long L , int kind ) { } static float floatUnaryOperation ( Float F , int kind ) { } static double doubleUnaryOperation ( Double D , int kind ) { } public int intValue ( ) throws UtilEvalError { } public boolean booleanValue ( ) throws UtilEvalError { } public boolean isNumber ( ) { } public Number numberValue ( ) throws UtilEvalError { } public boolean equals ( Object obj ) { } public int hashCode ( ) { } public static Object unwrap ( Object obj ) { } public static Object [ ] unwrap ( Object [ ] args ) { } public static Object [ ] wrap ( Object [ ] args , Class [ ] paramTypes ) { } public static Object wrap ( Object value , Class type ) { } public static Primitive getDefaultValue ( Class type ) { if ( ( type == null ) || ( ! ( type . isPrimitive ( ) ) ) ) return Primitive . NULL ; if ( type == ( Boolean . TYPE ) ) return new Primitive ( false ) ; try { <START_BUG> return new Primitive ( ( ( int ) ( 0 ) ) ) . castToType ( type , CAST ) ; <END_BUG> } catch ( UtilEvalError e ) { throw new InterpreterError ( "bad<seq2seq4repair_space>cast" ) ; } } public static Class boxType ( Class primitiveType ) { } public static Class unboxType ( Class wrapperType ) { } public Primitive castToType ( Class toType , int operation ) throws UtilEvalError { } static Primitive castPrimitive ( Class toType , Class fromType , Primitive fromValue , boolean checkOnly , int operation ) throws UtilEvalError { } public static boolean isWrapperType ( Class type ) { } static Object castWrapper ( Class toType , Object value ) { } }

Fix:
return new Primitive ( 0 ) . castToType ( type , CAST ) ;